IM-P316-03 CTLS Issue 14
15
Note: Use suitable protection against excess heat and noise when testing safety valves.
It is recommended that the safety valve is tested for correct operation on a regular basis as part of a
documented and controlled procedure, the frequency of testing is dependant on the application and system
conditions and an appropriate test interval must be decided by the user or relevant insurance company.
Some valves are fitted with standard (open type) levers to enable testing for correct operation during use.
Do not operate the lever unless the system pressure is at least 85% of the safety valve set pressure.
Do not use any tool or mechanical device (e.g. length of pipe) on the lever.
Do not apply excessive force - Hand operation only.
8.1
Once the valve has been fitted check that there are no leaks from either the inlet or the outlet
connections.
8.2
Test the valve by raising the system pressure. Check that the valve operates at the correct set
pressure.
8.3
Reduce the system pressure to the normal operating pressure and check that the safety valve reseats.
9. Testing during use
8. Commissioning
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